JP2631953B2 - Mounting brackets for attaching electrical equipment to arm and pedestals provided on utility poles using hot-wire insulation tools such as hot sticks and manipulators - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting bracket for installing electric equipment such as a high-voltage current breaker, a high-voltage current switch, and an arrester on a metal arm or a change board provided on a utility pole. Wire insulation work tool (hot stick, manipulator, etc.)
Are used to easily connect the electric devices to the arm and the gantry, thereby obtaining safe and efficient workability when working at high places.

[0002]

2. Description of the Related Art Generally, telephone poles are equipped with a large number of electric devices such as high-voltage cutouts and arresters. For example, as shown by a normal electric pole D in FIG. 7, a transformer C is mounted on a transformer base F for mounting and fixing a transformer C, and is connected via a mounting bracket G or an arrester B is attached to the electric pole. Arms H
And the gantry F via a mounting bracket.

A description will be given of an example of a mounting bracket for an electric device which has been conventionally used. First, with regard to the installation of the high pressure cutout, FIG. 8 shows a cylindrical high pressure cutout. The cylindrical high-pressure cutout A is provided with a stopper 1 provided with a tightening band. The stopper 2 is attached to an arm or a movable base by holding pieces 2a and 2b and a bolt 2c.
Is a stopper 1 attached to the cylindrical high-pressure cutout A side.
Bolted to

FIG. 9 shows a box-shaped cutout, in which a box-shaped high-pressure cutout A 'is provided with a V-shaped stopper 1' by bolts. A stopper 2 'attached to the arm or the gantry is connected to a stopper 1' attached to the cylindrical high-pressure cutout A 'by a bolt by' b and a bolt 2'c.

[0005] Next, regarding mounting of the arrester B, FIG.
0 indicates that the mounting position of the arrester B is higher than the arm or the platform. The stopper 3 attached to the arrestor B side is coupled to a stopper 4 which is a U-shaped bolt having a shape conforming to a cross-sectional shape of an arm bar or a changing platform.

FIG. 11 shows an arrangement in which an arrestor B is mounted at the same height as an arm bracket or a change stand. A stopper 3 'attached to the arrestor B includes holding pieces 4a, 4b and bolts 4c, 4c. And is connected to the arm 4 and a stopper 4 ′ attached to the side of the changing platform. Further, in FIG. 12, the bent portion of one bent pressing piece 4'b of the stopper 4 "is connected to the stopper 3" attached to the arrester B.

In order to attach these high-voltage cutouts, arresters and the like to arms or variances provided on telephone poles, it is common for an operator to directly carry out the operation with their own hands.
Live line work under high pressure is very dangerous,
Since the number of parts of the mounting bracket itself is large, workability is reduced.

[0008]

In the above-mentioned conventional mounting brackets for various types of electric equipment, various types of mounting, particularly high-voltage cutouts and arresters to be mounted, or various types of mountings in each type are considered. Due to the inconvenience that metal fittings are required, hot sticks and manipulators, which are hot wire insulation work tools applied to distribution line work under high pressure, make it easy to apply high-pressure cutouts, arresters, etc. To provide a mounting bracket that can be easily attached to and detached from only the electric device side with respect to the arm bracket or the variance stand side, and when the two brackets are connected, There is also provided a mounting bracket configured so as not to rotate relatively at the connecting portion.

[0009]

In order to solve the above-mentioned problems, a mounting bracket according to the present invention is provided with an electric device attached to an arm or a change board provided on a utility pole by a live wire insulating work tool. A mounting bracket for coupling the electric device
At one end and an attached part at the other end
And a U-shaped stopper having a coupling portion for coupling an attached portion of the stopper, the U-shaped stopper having an opening for fitting the arm or the cradle, A hinge is provided at an upper end of the opening to pivotally support a pivot axis of a bolt, and a projection projecting from the pivot axis to the opposite side of the bolt is provided.
The bolt is in a state in which the projecting piece of the bolt projects toward an opening in a state where the bolt is engaged with a bolt standby positioning projection provided on the outer periphery of the U-shaped stopper. When the opening is fitted to the arm bar or the cradle, the projecting piece abuts against the arm bar or the cradle and is pushed, so that the bolt pivots in the lower end direction of the opening and closes to the lower end of the opening. The bolt is inserted into a slit of the provided escape prevention portion, and the bolt is fixed by a nut at the escape prevention portion. Further, the stopper which couples the electric device.
A connection fitting having a flange is connected to the attachment part of the fitting , and the fitting part of the connection fitting is formed in a raised state, and the fitting part is fitted and locked to the connection part of the U-shaped stopper. Is preferred.

[0010] In order to mount the electric equipment to the arm or the gantry using the mounting bracket having such a structure, in the case of mounting the high-pressure cutout, the worker has to use a hot stick in a workplace where there is only a small space for workers at high places. As a result, the U-shaped stopper is held and the fitting is fitted to the arm bar or the platform. At this time, when the projecting piece of the bolt hinged to the U-shaped stopper collides with the arm or the platform, the bolt automatically turns and reaches a predetermined position.

[0011] Then, while holding the nut with a hot stick, the operator is screwed into the bolt to attach the U-shaped stopper to the arm or the turntable, and finish the operation. Next, while holding the high-pressure cutout with the hot stick, the connecting fitting is connected to the attached portion of the stopper of the high-pressure cutout, and the fitting part of the connecting fitting is fitted to the connecting part of the U-shaped stopper. Lock.

Next, in the case of mounting the arrester, there is provided a structure in which a clasp attached to the arrestor is previously connected to a metal arm or a U-shaped stopper on the side of the cradle, and this structure is used as a hot stick. To fit into the arm and the platform. When a U-shaped stopper is fitted to the arm or the gantry, the hinged bolt is automatically rotated and positioned at a predetermined position as described above.

[0013] Since the U-shaped stopper is securely fitted to the arm or the gantry, the structure does not have to worry about moving or falling off.
The bolts in the structure maintained in the stationary state are tightened with a hot stick with nuts to complete the mounting.

Further, since the stopper of the electric device is provided with a collar which is a detent member, it is possible to prevent the relative rotation between the stopper of the electric device and the connecting member of the mounting member. it can.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a stopper ₁ attached to an arm bar E or a gantry F provided on a telephone pole, and has a U-shape adapted to the cross-sectional shape of the arm bar E or the gantry F, and an opening thereof. A pivotable bolt 7 and an escape prevention portion 6b for the bolt 7 are provided at each of the upper and lower ends of the d. Further, on the outer periphery, a bolt 7 standby positioning protrusion 5d is provided on an upper portion thereof, and on a side portion thereof. Is provided with a connecting portion 6c formed in a rising shape.

FIG. 2 shows a pivot portion of a bolt 7 for fastening a U-shaped stopper to the arm E or the gantry F.
The pivot shaft 7b is formed in the part, and from the pivot shaft 7b
A protruding piece 7a protruding on the opposite side of the bolt 7 is formed.
You .

FIG. 3 is a view showing a state where U is attached to a ferrule E or a change stand F.
Shows a state in which the fasteners b ₁ which is attached to the cylindrical high pressure cutout A side is a connecting portion 6c and the electric device of shaped studs i ₁ are combined, these fittings Lee _1, the B ₁ They are connected via a connection fitting c. The connection fitting C is formed so that the fitting portion 10 and the brim portion 12 are orthogonal to each other.

FIG. 4 shows a mounting mode of a box-shaped high-pressure cutout A 'different from that in FIG.
The stopper ₂ attached to the box-shaped high-pressure cutout A 'is V-shaped, and the box-shaped high-pressure cutout A' is attached in an inclined state.

FIG. 5 shows different types of fasteners B ₃ and B ₄ attached to the arrester B, except that the shape of the coupling portion 6c in the above-mentioned U-shaped fastener A ₁ is changed. It shows a state in which it is directly connected to the character-shaped stopper ₂ .

FIG. 6 shows a different example of the configuration of the U-shaped stopper _{2 of} FIG. 5 and shows the case where the arrestor is installed at the high position ₃ and the low position ₄ respectively.

Hereinafter, the present invention will be described in detail based on the configurations shown in FIGS. The U-shaped stopper ₁ attached to the arm or the change stand has a flange 5c at one end, a hinge 5b for a bolt 7 having a slit 5a at the other end, and waits for the bolt 7. A bolt 7 which forms a bolt stand-by positioning projection 5d for positioning in the vicinity of the hinge portion 5b and a bolt 7 which is turned by a turning shaft 7b provided with a projecting piece 7a passing through a slit 5a of the hinge portion 5b. A coupling part 6c coupled to a stopper attached to the electric device at one end, and a stopper piece 6 formed at the other end with an escape prevention part 6b of a bolt 7 having a slit 6a. The stopper pieces 5 and 6 are fitted into the flanges 5c in a part of the coupling portions 6c and then coupled by bolts 9 to form a U-shape.

In order to attach such a U-shaped stopper ₁ to an arm E or a gantry F provided at a height of a utility pole, _{one side} of the arm E or the gantry F is held while being held by a hot stick. Fit from

By this action, the bolt 7 (see the dotted line portion in FIG. 1) which stands by by the projection 5d comes into contact with the arm bar E or the gantry F as shown by the arrow Y when the projecting piece 7a provided thereunder. While being turned as shown by arrow C, the bolt 7 automatically turns, and the tip of the bolt 7 enters the slit 6a formed in the escape preventing portion 6b.

[0024] The U-shaped stopper ₁ is an arm E or
When the fitting is completed, the U-shaped stopper metal fitting ₁ becomes
Alternatively, even when the holding force by the hot stick or the manipulator is released to conform to the sectional shape of the gantry F, the U-shaped stopper ₁ is held by the arm E or the gantry F.

In such a state, the nut 8 is screwed into the screw portion of the bolt 7 while being held again by the hot stick, and tightened to complete the mounting operation.

A description will be given of a case where an electric device is connected to the U-shaped stopper A ₁ on the side of the arm E or the gantry F, on which the mounting is completed. First, the cylindrical high pressure cutout A (FIG. 3)
), And a clamp b ₁ is attached to the cylindrical high-pressure cutout A side by a tightening band portion 13.

A connecting fitting C for facilitating the connecting operation using a hot stick is connected to the stopper fitting ₁ via a flange 11 through a flange 12 thereof. The cylindrical high-pressure cutout A provided with the stopper B ₁ is conveyed by a hot stick or a manipulator to the connecting portion 6c of the U-shaped stopper A ₁ already provided on the arm E or the gantry F. The fitting piece 6 of the coupling portion 6c is fitted to the fitting portion 10 provided at the other end.
c ′ is slidably fitted and connected.

[0028] Also, '(see FIG. 4) For, the box-shaped high pressure cutout A' box-shaped high pressure cutout A the points fasteners b ₂ provided with a bolt 14 coupled to it is V-shaped flat plate It differs only from the cylindrical high pressure cutout A mounting means.

The connecting portion of the V-shaped stopper fitting ₂ is fitted into the flange 12 of the connecting fitting c and is connected to the bolt 11, so that the pivoting around the bolt 11 can be prevented, and No obstruction is caused by the swing of the cutout.

Next, the arrester B (see FIG. 5)
, Said the fastener which is attached to the arrester B are present fasteners B ₃ or B ₄ of the shape of the heterologous binding portion 6c is formed U-shaped fasteners Lee capable of absorbing these shapes
₂ is provided. The U-shaped stopper ₂ is a U-shaped stopper as described above except for the connecting portion 6c.

When the arrester B is attached to the arm H or the gantry F, the metal fittings ₃ or ₄ attached to the arrester B are used.
Is directly connected by bolts to the connecting portion 6c of the U-shaped stopper ₂ attached to the arm H or the gantry F,
While holding this structure with a hot stick or a manipulator, the U-shaped stopper fitting ₂
Or, it is fitted to the change stand F. During the fitting process, the tightening bolt 7 is automatically turned and positioned at a predetermined position.

When the U-shaped stopper ₂ is completely fitted to the arm or the cradle, the above-mentioned structure remains stationary on the arm H even if the gripping force of the hot stick or the manipulator is released. Alternatively, the nut 8 is screwed and tightened to the tightening bolt 7 while gripping the nut 8 by the manipulator.

FIG. 6 shows a case where the attachment position of the arrester B needs to be changed depending on the layout of the surrounding situation.
The change in height may be formed respectively of U-shaped fasteners of high position A ₃ for the position y for ₄ in the event of attached.

Although not shown in the drawings, for example, a U-shaped stop fitting in which a connecting piece is welded to a U-shaped piece, and if necessary, the length of the fitting connecting piece is increased or reduced. Various forms that can be changed in design, such as a connecting part structure in which the fitting connecting pieces are always fitted and maintained by the stop member, can be considered, and the present invention is not limited to the illustrated embodiment.

[0035]

As described above, the metal fitting for electric equipment according to the present invention is constructed as described above, so that a hot stick or a manipulator can be used for live-line work under a high voltage of 6.600 V. Danger is prevented, the work process is extremely shortened, and the workability is improved.Since it can be used without replacing the existing electrical equipment side fastener, it can be used economically with a simple connecting bracket. It is also a target.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 shows a U-shaped stopper attached to an arm or a change board provided on a utility pole.

FIG. 2 is an enlarged view of a turning shaft and a projecting piece for automatically turning a tightening bolt of a U-shaped stopper.

FIG. 3 shows a state in which a stopper attached to the cylindrical high-pressure cutout is connected to a coupling portion of the stopper attached to the arm through a coupling.

FIG. 4 shows a state in which a box-shaped high-pressure cutout is connected to a connection part.

FIG. 5 shows a state in which the arrestor is mounted on a wrist or a platform using a mounting bracket consisting of a metal clasp and a U-shaped metal clasp already provided on the arrester.

FIG. 6 shows various U-shaped fasteners that can correspond to the attachment height depending on the attachment location.

FIG. 7 is a conventional electric pole for general use, showing a state in which a transformer, a ferrule, and a high-voltage cutout are mounted on a transformer, and an arrester is mounted on the transformer and a ferrule.

FIG. 8 is a conventional mounting fixture for a cylindrical high-pressure cutout, which is formed by a stopper attached to a cylindrical high-pressure cutout and a stopper attached to an arm bar or a change stand. .

FIG. 9 shows a conventional mounting bracket for a box-shaped high-pressure cutout, in which a V-shaped flat metal plate attached to a box-shaped high-pressure cutout is connected to a stopper attached to an arm bar or a change stand. Is shown.

FIG. 10 shows a conventional arrestor mounting bracket, in which a sloping stopper attached to the arrester is connected to the upper part of a U-shaped bolt attached to the arm.

FIG. 11 shows a conventional arrester mounting bracket, in which a flat stopper attached to an arrestor is connected to a lower part of a stopper attached to an arm or a change stand.

FIG. 12 shows a conventional arrestor mounting bracket, showing a state in which a stopper provided on the arrestor is coupled to one bent pressing piece.

[Explanation of symbols]

B _1, b _{2 ...} cross-arm or U-shaped fasteners B ₁ annexed to varying _base, b _2, b _3, b _{4 ...} fasteners Ha ... U-shaped fastener and others are attached to the electrical device Connection fittings for connecting the stoppers D: Opening of U-shaped stopper A: High pressure cutout B: Arrester C: Transformer D: Electric pole E: Armrest F: Transformer stand G: Mounting bracket H: Armrest 1 ... A stopper attached to a cylindrical high-pressure cutout 2. A stopper 2a, 2b, 2′a, 2′b... A holding piece 2c, 2′c. 3 ', 3 ": Stopper attached to the arrester 4, 4', 4" ... Stopper attached to the arm or the change stand 4a, 4b, 4'b ... Pressing piece 4c ... Tightening bolt 5 ... U Stopper pieces 5a ... Slits 5b ... Hinges 5c ... Flanges 5d ... Protrusions for bolt standby positioning 6 .., 6 ′... A fastener piece 6a that constitutes a U-shaped fastener. 6... A slit 6 b. Tightening bolts 7a ... Protrusions 7b ... Revolving shaft 8 ... Nuts 9 ... Bolts 10 ... Fitting parts 11 ... Bolts 12 ... Collars 13 ... Clamping band parts of fasteners 14 ... Bolts 15, 17, 19 ... To electrical equipment Attachment parts of the fasteners of the present invention 16, 18, 20 ... connecting parts for joining the fasteners attached to the electric device to other fasteners

Continuation of the front page (56) References JP-A 2-7721 (JP, U) JP-A 4-64928 (JP, U) JP-A 4-68406 (JP, U)

Claims (2)

(57) [Claims] 1. A mounting bracket for attaching an electric device to an arm or a turntable provided on a power pole by a live wire insulating work tool, wherein a connecting portion for connecting the electric device is provided at one end.
And a U-shaped stopper having a connecting portion for connecting the attached portion of the stopper, and the U-shaped stopper having the arm or the other end. which has an opening for fitting the platform, the Bol from said pivot axis to pivot the pivot axis of the bolt in the hinge portion provided in the upper end of the opening
A protrusion protruding from the opposite side of the bolt is provided , and the bolt protrudes toward the opening in a state where the bolt is engaged with a bolt standby positioning protrusion provided on the outer periphery of the U-shaped stopper. In the state, when the opening of the U-shaped stopper is fitted to the arm bar or the cradle, the bolt is pressed against the arm bar or the cradle so that the bolt is positioned at the lower end of the opening. A mounting bracket, which is turned in the direction and inserted into a slit of an escape prevention portion provided at a lower end of the opening, and the bolt is fixed by a nut at the escape prevention portion. 2. The fastener according to claim 2, wherein said fastener is connected to said electric device.
A connecting fitting having a brim portion is connected to the attached part, and a fitting part of the connecting fitting is formed in a raised state, and the fitting part is formed in the U shape.
2. The mounting bracket according to claim 1, wherein the mounting bracket is fitted and locked to a coupling portion of the character-shaped stopper.